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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
49 lines
2.7 KiB
C
49 lines
2.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/sysv/consts/at.h"
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#include "libc/temp.h"
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/**
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* Generates temporary filename.
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*
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* char tmp[14] = "/tmp/hiXXXXXX";
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* puts(mkstemp(tmp));
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*
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* @param template is mutated to replace last six X's with rng
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* @raise EINVAL if `template` didn't end with `XXXXXX`
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* @return always `template` which on success will have its XXXXXX bytes
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* mutated to a random value, otherwise on error it'll hold an empty
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* string and `errno` will be set
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* @see mkstemp() if you you need a file descriptor
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* @see mkstemps() if you you need a file extension
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* @see openatemp() for one temp roller to rule them all
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* @see mkostemp() if you you need a `O_CLOEXEC`, `O_APPEND`, etc.
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* @cancelationpoint
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*/
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char *mktemp(char *template) {
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int fd;
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if ((fd = openatemp(AT_FDCWD, template, 0, 0, 0)) != -1) {
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unassert(!close(fd));
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} else {
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*template = 0;
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}
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return template;
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}
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